Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Dense Fog Advisory in effect from March 21, 03:25 AM EDT until March 21, 08:00 AM EDT

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fog

46°F

8°C

Humidity	100%
Wind Speed	NW 5 mph
Barometer	29.74 in
Dewpoint	46°F (8°C)
Visibility	0.15 mi
Wind Chill	44°F (7°C)
Last update	21 Mar 4:35 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

2 Miles W Coatesville PA

Dense Fog Advisory until March 21, 08:00am

Click here for hazard details and duration

Dense Fog Advisory

Dense Fog Advisory until March 21, 08:00am
NOW until 8:00am Sat
Dense Fog Advisory
Overnight
Low: 47 °F
Areas Dense
Fog
Saturday
High: 57 °F
Areas Dense
Fog then
Mostly Sunny
Saturday Night
Low: 42 °F
Mostly Cloudy
Sunday
High: 70 °F
Mostly Cloudy
then Chance
Showers
Sunday Night
Low: 43 °F
Showers
Monday
High: 49 °F
Showers then
Chance
Showers
Monday Night
Low: 28 °F
Mostly Clear
Tuesday
High: 47 °F
Sunny

Detailed Forecast

Overnight

Areas of dense fog. Otherwise, partly cloudy, with a low around 47. West wind around 5 mph.

Saturday

Areas of dense fog before 8am. Otherwise, mostly sunny, with a high near 57. North wind around 10 mph.

Saturday Night

Mostly cloudy, with a low around 42. East wind 5 to 10 mph becoming south in the evening.

Sunday

A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 70. Southwest wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday Night

A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Low around 43. North wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Monday

Showers, mainly before 8am. High near 49. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Monday Night

Mostly clear, with a low around 28.

Tuesday

Sunny, with a high near 47.

Tuesday Night

Mostly cloudy, with a low around 33.

Wednesday

Partly sunny, with a high near 53.

Wednesday Night

Mostly cloudy, with a low around 36.